I wouldn't say your biggest limitation. I would say your greatest strength is beginning to "learn" what you are looking for and how to translate that in to higher productivity. Nothing should be more satisfying that looking at that screen, identifying something, finding it again, and catching fish off of it. Sometimes you catch one, sometimes 100 but not every piece of structure will hold a ton of fish!
Remember, your idea of bad fishing might be someone elses idea of great success.